@mkdir-p build-dep@sed <opam -E's/^(build|install|remove):.*/\1: []/; s/^name: *"(.*)" */name: "\1-builddep"/'>build-dep/opam@fgrep builddep build-dep/opam >/dev/null ||(echo"sed failed to fix the package name"&&exit 1)# sanity checkbuild-dep:build-dep/opam phony@# We want opam to not just instal the build-deps now, but to also keep satisfying these@# constraints. Otherwise, `opam upgrade` may well update some packages to versions@# that are incompatible with our build requirements.@# To achieve this, we create a fake opam package that has our build-dependencies as